12 Days of Christmas
399
Abundant Numbers
609
Abundant Numbers (Long)
669
Arithmetic Numbers
649
Collatz
743
Divisors
844
Emojify
417
Fibonacci
928934
Fizz Buzz
848
Foo Fizz Buzz Bar
714
ISBN
583
Niven Numbers
771
Niven Numbers (Long)
839
Pangram Grep
724719
Tongue-twisters
378
Vampire Numbers
69
π
56